package com.bestdreamer.design.principle.demeter;

import java.util.ArrayList;
import java.util.List;

public class TeamLeader {
    public void checkNumberOfCourses(){

        List<Course> courseList = new ArrayList<Course>();
        for(int i = 0; i <20; i++){
            courseList.add(new Course());
        }

        System.out.println("在线课程的数量是："+courseList.size());
    }
}
